Hmm…
 
Not gonna lie, Daybreakers and Thunder Eaters would be excellent names for canon Space Marine chapters.

This give me an idea for a drawing…

@infinita est lux Solis  
Right…

@Background Pony #2D7A  
As I said, they don’t really have a leader, instead Deathwatch teams are commanded by the Ordo Xenos of the Inquisition

@infinita est lux Solis  
Oookkk then so who’s the leader deathwatch and changewatch?

@Background Pony #2D7A  
They are the deathwatch, and so they don’t have a primarch… or really a leader of any kind

@infinita est lux Solis  
What about the changewatch? Who’s are those?

@Inquisitorum  
Quit being so uptight about it dude. It’s just some fan art, and this isn’t the place to Inquisitor RP.

@infinita est lux Solis  

 
+TRANSMISSION+  
0.9.017.M03 H12:09  
< Terra, A.Administr.  

[Decoding allowed by A.Ministr.]  
+MESSAGE+  
This image has been declared as heresy because of following reasons:  
A) The content of a clear attempt to designate the holy Chapters known as Adeptus Astartes as a work of lower forms (exemplo: name of Adeptus Ultra was changed to “Ultramares”. Mare is a female horse - creatures that were tools of humanity for thousands of years. Considered as mockery). A.A. as a creation of Emperor of Mankind couldn’t be created by animals, the context itself have a goal to make Him a fool. Detected work of chaos.  
B) Contents of Codex Astartes determine every sacred name of any Chapter. Changing/misspeling/mocking them is obviously denouncing for them. Contents of any Imperial law Codex tells that names of Grey Knights or Deathwatch cannot be used as “objects of fun” too. This forms of denounciation can be signs of third-party tries to destabilize or wish to diminish meaning of every Chapter mentioned.  
C) Contents of warbands formerly known as Chapters that betrayed Emperor of Mankind during events of Horus’ Heresy. Detected work of chaos.  
D) Objects of unknown cult/form drawn as symbols of Holy Chapters. Names based on unknown origin (zoonotic) that are considered to make a mockery out of them. Detected work of chaos.
 

 
The words of The Emperor were spoken. Now go and return on proper path or burn in the flames of the warp.  
The Emperor protects.  
+END+

@Inquisitorum  
What do you mean… there is no heresy here except the chaos legions

Oh, I see some serious heresy right now.
 
With hatred of the Emperor himself,  
Ordo Malleus

@infinita est lux Solis  
Ah, ok.
 
Though Moondancer fits as being Magnus.

@chubbyninja89  
primarchs: lion el’jonson = octavia  
fulgrim = rarity  
perturabo = big mac  
jaghatai khan = rainbow dash  
leman russ = pinkamena  
dorn = applejack  
konrad = starlight  
sanguinius = fluttershy  
ferrus manus = limestone pie  
angron = lightning dust  
guilliman = twilight  
mortarion = bon bon  
magnus = moondancer  
horus = luna  
lorgar = lyra  
vulkan = sunset  
corvus corax = maud pie  
and alpharius omegon = apple bloom and babs seed.
 
Oh, and silver spoon = kaldor draigo

So who’s legion is whose? Because I can tell who many of them are, but there are a number of ones I can’t fully tell.

@NightRaven  
What?

Not all primarchs correctly selected.

@infinita est lux Solis  
Thank you, one of my favourite crossovers- is MLP and Warhammer 40000  
And with the Horus Heresy, is great :)

Wow O_O

@Nephilim Rider  
You could try to find the cutie marks in their symbols, but if you still can’t then here’s a list  
||  
primarchs: lion el’jonson = octavia  
fulgrim = rarity  
perturabo = big mac  
jaghatai khan = rainbow dash  
leman russ = pinkamena  
dorn = applejack  
konrad = starlight  
sanguinius = fluttershy  
ferrus manus = limestone pie  
angron = lightning dust  
guilliman = twilight  
mortarion = bon bon  
magnus = moondancer  
horus = luna  
lorgar = lyra  
vulkan = sunset  
corvus corax = maud pie  
and alpharius omegon = apple bloom and babs seed.
 
Oh, and silver spoon = kaldor draigo  
||

can you tell me, what pony belongs to what legion?

If you’re going to dislike, then at least comment as to why you dislike.